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[3.10] gh-101892: Fix SystemError when a callable iterator call exhausts the iterator (GH-101896) (#102422)

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gh-101892: Fix `SystemError` when a callable iterator call exhausts the iterator (#101896)

Co-authored-by: Oleg Iarygin <oleg@arhadthedev.net>
(cherry picked from commit 705487c655)

Co-authored-by: Raj <51259329+workingpayload@users.noreply.github.com>
This commit is contained in:
Oleg Iarygin 2023-03-04 19:26:12 +04:00 • committed by GitHub
parent 6c2e052ee0
commit fe36778968
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3 changed files with 30 additions and 2 deletions
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4
Objects/iterobject.c
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@ -223,7 +223,7 @@ calliter_iternext(calliterobject *it)
}
result = _PyObject_CallNoArg(it->it_callable);
if (result != NULL) {
if (result != NULL && it->it_sentinel != NULL){
int ok;
ok = PyObject_RichCompareBool(it->it_sentinel, result, Py_EQ);
@ -231,7 +231,6 @@ calliter_iternext(calliterobject *it)
return result; /* Common case, fast path */
}
Py_DECREF(result);
if (ok > 0) {
Py_CLEAR(it->it_callable);
Py_CLEAR(it->it_sentinel);
@ -242,6 +241,7 @@ calliter_iternext(calliterobject *it)
Py_CLEAR(it->it_callable);
Py_CLEAR(it->it_sentinel);
}
Py_XDECREF(result);
return NULL;
}